非均勻采樣數(shù)據(jù)系統(tǒng)的新型模型描述方法
發(fā)布時間:2018-08-14 12:41
【摘要】:提升技術是處理非均勻采樣數(shù)據(jù)(Non-uniformly sampled-data,NUSD)系統(tǒng)的標準工具.然而,提升狀態(tài)空間模型存在因果約束問題,相應的提升傳遞函數(shù)模型結(jié)構(gòu)復雜,且參數(shù)數(shù)目過多.因此,它們不便于非均勻采樣數(shù)據(jù)系統(tǒng)的辨識與控制.通過引入時變后移算子,本文提出了一種輸入輸出表達的新型模型描述方法.該模型能夠克服提升系統(tǒng)模型的缺點,使得傳統(tǒng)單率系統(tǒng)的辨識和控制方法能夠推廣到非均勻采樣數(shù)據(jù)系統(tǒng)中.仿真結(jié)果表明了新模型的優(yōu)越性和有效性.
[Abstract]:Lifting is a standard tool for handling Non-uniformly sampled-data / NUSD systems. However, the lifting state space model has causality constraints, and the corresponding lifting transfer function model has a complex structure and a large number of parameters. Therefore, they are not convenient for identification and control of non-uniform sampling data systems. By introducing time-varying backward shift operator, a new model description method for input and output expression is proposed in this paper. This model can overcome the shortcomings of the lifting system model and make the traditional identification and control methods of single-rate systems can be extended to non-uniform sampling data systems. The simulation results show the superiority and effectiveness of the new model.
【作者單位】: 江南大學輕工過程先進控制教育部重點實驗室;江南大學物聯(lián)網(wǎng)工程學院;
【基金】:國家自然科學基金(61403166) 江蘇省自然科學基金(BK20140164) 中央高;究蒲袠I(yè)務費專項資金(JUSRP11561,JUSRP51510)資助~~
【分類號】:N945.14;TP13
本文編號:2182892
[Abstract]:Lifting is a standard tool for handling Non-uniformly sampled-data / NUSD systems. However, the lifting state space model has causality constraints, and the corresponding lifting transfer function model has a complex structure and a large number of parameters. Therefore, they are not convenient for identification and control of non-uniform sampling data systems. By introducing time-varying backward shift operator, a new model description method for input and output expression is proposed in this paper. This model can overcome the shortcomings of the lifting system model and make the traditional identification and control methods of single-rate systems can be extended to non-uniform sampling data systems. The simulation results show the superiority and effectiveness of the new model.
【作者單位】: 江南大學輕工過程先進控制教育部重點實驗室;江南大學物聯(lián)網(wǎng)工程學院;
【基金】:國家自然科學基金(61403166) 江蘇省自然科學基金(BK20140164) 中央高;究蒲袠I(yè)務費專項資金(JUSRP11561,JUSRP51510)資助~~
【分類號】:N945.14;TP13
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